MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Electrical Engineering
Transistors
Quiz 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
The power gain in a transistor connected in ___________ arrangement is the highest
common emitter
common base
common collector
none of the above
Q.2
If Q of an LC circuit increases, then bandwidth ___________
Increases
Decreases
Remains the same
Insufficient data
Q.3
In a transistor ___________
IC = IE + IB
IB = IC + IE
IE = IC - IB
IE = IC + IB
Q.4
Frequencies above ___________ kHz are called radio frequencies
2
10
50
200
Q.5
The phase difference between the input and output voltages in a common base arrangement is ___________
180°
90°
270°
0°
Q.6
IC = ß IB + ___________
ICBO
IC
ICEO
aIE
Q.7
Transistor biasing represents ___________ conditions
a.c.
d.c.
both a.c. and d.c.
none of the above
Q.8
In parallel resonance, the circuit impedance is ___________
C/LR
R/LC
CR/L
L/CR
Q.9
Transistor biasing is generally provided by a ___________
Biasing circuit
Bias battery
Diode
None of the above
Q.10
The voltage gain in a transistor connected in ___________ arrangement is the highest
common base
common collector
common emitter
none of the above
Q.11
The leakage current in CE arrangement is ___________ that in CB arrangement
more than
less than
the same as
none of the above
Q.12
In the double tuned circuit, if the mutual inductance between the two tuned circuits is decreased, the level of resonance curve ___________
Remains the same
Is lowered
Is raised
None of the above
Q.13
At series resonance, voltage across L is ___________ voltage across C
Equal to but opposite in phase to
Equal to but in phase with
Greater than but in phase with
Less than but in phase with
Q.14
If the value of a is 0.9, then value of ß is ___________
9
0.9
900
90
Q.15
The disadvantage of base resistor method of transistor biasing is that it ___________
Is complicated
Is sensitive to changes in ß
Provides high stability
None of the above
Q.16
The voltage gain of a transistor connected in common collector arrangement is ___________
equal to 1
more than 10
more than 100
less than 1
Q.17
For faithful amplification by a transistor circuit, the value of VBE should ___________ for a silicon transistor
Be zero
Be 0.01 V
Not fall below 0.7 V
Be between 0 V and 0.1 V
Q.18
An ideal value of stability factor is ___________
100
200
More than 200
1
Q.19
At series or parallel resonance, the circuit power factor is ___________
0%
5%
10%
8%
Q.20
At series resonance, the circuit offers ___________ impedance
Zero
Maximum
Minimum
None of the above
Q.21
A tuned amplifier is generally operated in ___________ operation
Class A
Class C
Class B
None of the above
Q.22
If a high degree of selectivity is desired, then double-tuned circuit should have ___________ coupling
Loose
Tight
Critical
None of the above
Q.23
The value of VBE ___________
Depends upon IC to moderate extent
Is almost independent of IC
Is strongly dependant on IC
None of the above
Q.24
The arrow in the symbol of a transistor indicates the direction of ___________
electron current in the emitter
electron current in the collector
hole current in the emitter
donor ion current
Q.25
A transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will ___________
remain the same
increase
decrease
none of the above
Q.26
When the temperature changes, the operating point is shifted due to .
Change in ICBO
Change in VCC
Change in the values of circuit resistance
None of the above
Q.27
The value of stability factor for a base resistor bias is ___________
Q.28
When either L or C is increased, the resonant frequency of LC circuit ___________
Remains the same
Increases
Decreases
Insufficient data
Q.29
A transistor is a ___________ operated device
current
voltage
both voltage and current
none of the above
Q.30
Transistor biasing is done to keep ___________ in the circuit
Proper direct current
Proper alternating current
The base current small
Collector current small
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page